Entry 5 senses · 4 variants Webster, 1913 Knap /(năp)/ · IPA /næp/ n. v. t. v. i. n. 01 n. A protuberance; a swelling; a knob; a button; hence, rising ground; a summit. See Knob, and Knop. 1. A protuberance; a swelling; a knob; a button; hence, rising ground; a summit. See Knob, and Knop. See: Knob, Knop “The highest part and knap of the same island.” — Holland. 02 v. t. To bite; to bite off; to break short. imp. & p. p. Knapped; p. pr. & vb. n. Knapping 1. To bite; to bite off; to break short.[Obs. or Prov. Eng. ] “He will knap the spears apieces with his teeth.” — Dr. H. More. “He breaketh the bow, and knappeth the spear in sunder.” — Ps. xlvi. 9 (Book of Common Prayer.) 2. To strike smartly; to rap; to snap.[Chiefly Brit.] 03 v. i. To make a sound of snapping. 1. To make a sound of snapping. 04 n. A sharp blow or slap. 1. A sharp blow or slap.